It will be good practice, but don't get frustrated if you can't get the results you are hoping for. It is more like entering a deep trance than entering a lucid dream. In fact, I've always believed the main difference between deep trance meditation and lucid dreaming is the timing.

I agree with Tornado Joe. You can WILD into NREM dreams, but they are nothing like typical lucid dreams. It is a very weird limbo state. In the Tibetan tradition, you train to hold your awareness throughout the entire night. You stay aware as you slip into and out of REM dreams, NREM dreams, and nothingness. You may want to read up on some Tibetan Dream Yoga excercises.

I can always tell when I end up in this place. Everything goes normal during my WILD, then I just end up in a calm void. It feels like I'm stuck, and just can't enter a dream. Sometimes it is accompanied by a weird loss of ego, or loss of localized consciousness. It is an amazing state in its own right, and something that is the main goal of many types of meditation. You could say it is the base of some entire religions.

But that's just, like, my opinion, man